Question

Calcule as expressões:
A) 1/3×(3/5÷1/2)
B) 5/2÷(4/3×3/4)
C) (5/4-1/4)*(1/5+2/5)
D) (1/4+1/2)÷(3/2+3)

Answer 1

a. 1/3 x (3/5÷1/2)
1/3 x (3/5x2/1)
1/3 x 6/5 = 6/15

b. 5/3 ÷ (4/3x3/4)
5/3 ÷ (12/12)
60/36 = 10/6 = 5/3

c. (5/4 - 1/4) x (1/5 + 2/5)
(4/4)x(3/5)=
12/20 = 6/10 = 3/5

d. (1/4 + 1/2) ÷ (3/2 + 3)
(1/4+2/4)÷ (3/3+6/2)
3/4 ÷ 18/4
3/4 x 4/18. = 12/72. = 1/6